Defining Function Relationships

• 1

• -2

• 0

• 4

A mapping is shown in the diagram above.

This mapping is.....

• a function, because Feb has two outputs, 28 and 29

• a function, because two inputs, Jan and Mar, result in the output 31

• not a function, because Feb has two outputs, 28 and 29

• not a function, because two inputs, Jan and Mar, result in the output 31

A relation where every input in matches with exactly one output is called what?

• Relation

• Linear

• Exponential

• Function

Is this a function? Explain.

• Yes; it passes the horizontal line test.

• No; it is not a straight line.

• Yes; it passes the vertical line test.

• No; there is a line connecting the dots.

Which relation shows a function?

• A

• B

• C

• D

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

Which relation shows a function?

• A

• B

• C

• D

Which relation shows a function?

• A

• B

• C

• D

Which relation shows a function?

• A

• B

• C

• D

Which relation shows a function?

• A

• B

• C

• D